A multi-stage mesh screen pulverizing apparatus for fine materials

Abstract

The utility model relates to a crushing equipment technical field, the utility model discloses a kind of multistage screen mesh crushing equipment for fine material, including base;Motor is fixedly installed on the base;Crushing shell is fixed in the motor casing one end, and the output end of the motor extends to crushing shell, bottom net disc, lower layer blade, upper layer net and upper layer blade are sequentially equipped in the crushing shell from bottom to top, this multistage screen mesh crushing equipment for fine material, the multistage structure of this equipment by upper layer blade, upper layer net, lower layer blade and bottom net disc, realize material crushing, screening, re-smashing closed loop, without artificial collection substandard material secondary feeding, save multiple circulation steps. Full automation completes material processing, reduces manual intervention and manpower cost, while saving secondary crushing time, greatly improve material processing capacity, guarantee discharge granularity standard, significantly optimize use effect, satisfy actual fine material crushing demand.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, specifically a multi-stage screen crushing equipment for fine materials. Background Technology

[0002] In many high-end manufacturing sectors, production processes impose extremely stringent requirements on the particle size of materials, often requiring fine powders down to hundreds of meshes or even micrometers. Existing single-pass grinding equipment, due to structural and functional limitations, typically produces a wide particle size distribution, including a large number of "semi-finished" particles that do not meet the target fineness. These substandard materials must be collected and re-input into the equipment for secondary or even multiple grinding processes to meet production demands. Secondary crushing means that materials need to undergo multiple cycles of feeding, crushing, discharging, and conveying. This not only makes the entire process lengthy and cumbersome, but also severely restricts overall production efficiency due to multiple equipment start-ups and shutdowns and manual intervention, failing to meet the needs of continuous and automated production. Therefore, we propose a multi-stage screen crushing device for fine materials to solve the above-mentioned problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a multi-stage screen crushing device for fine materials, which solves the problem of existing single-stage crushing equipment requiring secondary crushing: avoiding the lengthy cycle of multiple feeding, crushing, discharging and conveying of materials due to insufficient particle size in a single crushing, and solving the shortcomings of low production efficiency and inability to meet the needs of continuous and automated production caused by multiple equipment start-ups and shutdowns and manual intervention, thus enabling materials to be crushed to the required standard with a single input.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a multi-stage screen crushing device for fine materials, including a base; The motor is fixedly mounted on the base; A crushing shell is fixed to one end of the motor housing, and the output end of the motor extends into the crushing shell. The crushing shell is provided with a bottom mesh, a lower blade, an upper mesh, and an upper blade in sequence from bottom to top. The discharge port is located at the bottom side of the crushing shell; A cutter shaft holder is located at the output end of the motor; A feed plate is located at the top of the cutter shaft seat; A mold frame cover is disposed inside the crushing shell, and a hopper is inserted into the top of the mold frame cover; A housing cover is provided at the opening of the crushing housing and fits onto the top of the mold frame cover through a circular hole.

[0005] Preferably, the inner sidewall of the crushing shell is provided with multiple sets of equidistant stepped blocks, the output end of the motor is fixedly mounted with a spindle seat, the upper surface of the spindle seat is fixed with a locking pin, the cutter shaft seat is provided with a positioning hole adapted to the locking pin, the center hole of the cutter shaft seat is sleeved on the spindle seat, and the locking pin is inserted into the positioning hole to realize the limiting and locking of the cutter shaft seat and the spindle seat.

[0006] Preferably, the bottom mesh disk is placed on the bottom step of multiple sets of stepped blocks and simultaneously fitted onto the cutter shaft seat. A stepped ring is fixed to the inner side wall of the bottom mesh disk. The lower blade is engaged with the hexagonal part of the cutter shaft seat. A first spacer is provided on the lower blade and is engaged with the hexagonal part of the cutter shaft seat. The upper mesh is placed on the stepped ring fixed to the bottom mesh disk and fitted onto the cutter shaft seat. The upper blade is fitted with the hexagonal part of the cutter shaft seat. A second spacer is provided above the upper blade and is engaged with the hexagonal part of the cutter shaft seat. A nut is threadedly connected to the threaded part of the cutter shaft seat.

[0007] Preferably, a circular hole is provided at the center of the feeding disc, and a bolt rod is provided in the circular hole, and the bolt rod is screwed into the threaded groove of the main shaft seat.

[0008] Preferably, a protrusion is fixedly installed on the outer surface of the upper mesh, and a limiting groove adapted to the protrusion is opened on the inner side wall of the bottom mesh plate.

[0009] Preferably, a limiting piece is fixedly installed on the outer periphery of the bottom mesh plate.

[0010] Preferably, the crushing shell and the shell cover are fitted with symmetrically arranged fasteners. Beneficial effects

[0011] This invention provides a multi-stage screen crushing device for fine materials. Compared with the prior art, it has the following advantages: This multi-stage screen crushing equipment for fine materials utilizes a multi-stage crushing and grading structure consisting of upper blades, an upper screen, lower blades, and a bottom screen plate. This achieves a closed-loop process of crushing, screening, and re-crushing within the equipment. Coarse particles are intercepted by the upper screen and continue to undergo primary crushing. Material passing through the upper screen is then further refined through secondary crushing, ultimately outputting only material that meets the target particle size. This eliminates the need for manual collection of substandard material for secondary feeding, completely eliminating multiple cyclical steps, simplifying the production process, and avoiding the repeated feeding, start-up, and manual sorting operations of existing equipment. The entire process from material input to output is automated, reducing manual intervention and lowering labor costs. Simultaneously, eliminating the cycle time for secondary crushing significantly increases the material throughput per unit time, improving the equipment's effectiveness and meeting practical application needs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is an unfolded view of the overall structure of this utility model; Figure 4 This utility model Figure 3 A magnified structural diagram at point A; Figure 5 This is a structural schematic diagram of the crushing shell and discharge port of this utility model.

[0013] In the diagram: 101, base; 102, motor; 103, crushing shell; 104, discharge port; 105, shell cover; 106, buckle; 107, hopper; 108, main shaft seat; 109, locking pin; 110, step block; 111, bottom mesh plate; 112, step ring; 113, lower blade; 114, first partition; 115, upper mesh; 116, protrusion; 117, upper blade; 118, second partition; 119, nut; 120, feeding disc; 121, cutter shaft seat; 122, positioning hole; 123, mold frame cover. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figure 1-5 As shown: A multi-stage screen crushing device for fine materials includes a base 101; Motor 102 is fixedly mounted on base 101; The crushing housing 103 is fixed to one end of the motor housing 102, and the output end of the motor 102 extends into the crushing housing 103. The crushing housing 103 is provided with a bottom screen 111, a lower blade 113, an upper screen 115 and an upper blade 117 in sequence from bottom to top. The discharge port 104 is located at the bottom side of the crushing shell 103; The cutter shaft holder 121 is located at the output end of the motor 102; The inner side wall of the crushing shell 103 is provided with multiple sets of equidistant stepped blocks 110. The output end of the motor 102 is fixedly installed with a spindle seat 108. A locking pin head 109 is fixed on the upper surface of the spindle seat 108. The cutter shaft seat 121 is provided with a positioning hole 122 that matches the locking pin head 109. The center hole of the cutter shaft seat 121 is sleeved on the spindle seat 108, and the locking pin head 109 is inserted into the positioning hole 122 to realize the limiting and locking of the cutter shaft seat 121 and the spindle seat 108. The bottom mesh tray 111 is placed on the bottom steps of multiple sets of stepped blocks 110 and simultaneously fitted onto the cutter shaft seat 121. A stepped ring 112 is fixed to the inner wall of the bottom mesh tray 111. The lower blade 113 is engaged with the hexagonal portion of the cutter shaft seat 121, and a first spacer 114 is provided on the lower blade 113. The first spacer 114 is engaged with the hexagonal portion of the cutter shaft seat 121. The upper mesh 115 is placed on the stepped ring 112 fixed to the bottom mesh tray 111 and fitted onto the cutter shaft seat 121. The upper blade 117 is fitted onto the hexagonal part of the cutter shaft seat 121. A second partition 118 is provided above the upper blade 117. The second partition 118 is locked into the hexagonal part of the cutter shaft seat 121. A nut 119 is threadedly connected to the threaded part of the cutter shaft seat 121. A protrusion 116 is fixedly installed on the outer surface of the upper mesh 115. A limiting groove adapted to the protrusion 116 is opened on the inner side wall of the bottom mesh tray 111. A limiting piece is fixedly installed on the outer surface of the bottom mesh tray 111. A feeding disc 120 is located at the top of the cutter shaft seat 121. A circular hole is provided at the center of the feeding disc 120, and a bolt rod is provided in the circular hole. The bolt rod is screwed into the threaded groove of the main shaft seat 108. A mold frame cover 123 is located inside the crushing shell 103, and a hopper 107 is inserted into the top of the mold frame cover 123. The housing cover 105 is located at the opening of the crushing housing 103 and is fitted onto the top of the mold frame cover 123 through a circular hole. A symmetrically arranged latch 106 is installed between the crushing housing 103 and the housing cover 105 for locking the connection between the crushing housing 103 and the housing cover 105.

[0016] In this implementation plan: When using the multi-stage screen crushing equipment for fine materials, the housing cover 105 is locked to the crushing housing 103 by the buckle 106 to ensure that the top of the mold frame cover 123 is tightly inserted into the hopper 107. The bottom screen 111 is placed in a limited position with the inner side of the crushing housing 103 by the outer limiting piece and the step block 110. The upper screen 115 is engaged with the limiting groove of the bottom screen 111 by the protrusion 116 to prevent the parts from shifting during the crushing process. After the motor 102 is powered on, its output end drives the spindle seat 108 to rotate. Since the cutter shaft seat 121 is locked to the spindle seat 108 by the locking pin head 109 through the positioning hole 122, the spindle seat 108 synchronously drives the cutter shaft seat 121 to rotate, thereby driving the lower blade 113, the upper blade 117 and the top feed plate 120 that are engaged in the hexagonal part of the cutter shaft seat 121 to rotate at high speed. The fine material to be crushed is fed into the hopper 107 and falls down along the internal channel of the mold frame cover 123 to the area of ​​the feeding disc 120. The high-speed rotating feeding disc 120 disperses the material evenly through centrifugal force and conveys it downward to the primary crushing area composed of the upper blade 117 and the upper mesh 115, avoiding material accumulation that would lead to uneven crushing; The upper blade 117 rotates at high speed with the cutter shaft seat 121, performing initial shearing and impact crushing on the dispersed material to initially reduce the particle size. Particles smaller than the aperture of the upper mesh 115 fall through the mesh to the lower crushing area; coarse particles that do not meet the size requirements are intercepted by the upper mesh 115 and remain below the upper blade 117 for continued crushing until they meet the size requirements and pass through the upper mesh 115. During this process, the first partition 114 and the second partition 118 respectively fix the positions of the lower blade 113 and the upper blade 117, ensuring a stable distance between the blades and the screen and guaranteeing crushing accuracy. Material passing through the upper mesh 115 falls into the secondary crushing zone formed by the lower blades 113 and the bottom mesh 111. The lower blades 113 further finely crush the material, ensuring the particle size meets the target requirements. After secondary crushing, the material meeting the fineness requirements passes through the gaps or preset channels of the bottom mesh 111 and is finally discharged from the discharge port 104 at the bottom side of the crushing shell 103, completing the entire crushing process. If the bottom mesh 111 is equipped with an additional screening structure, it can further intercept trace amounts of substandard particles, ensuring the purity of the output. This solution utilizes a multi-stage crushing and grading structure consisting of an upper blade 117, an upper mesh 115, a lower blade 113, and a bottom mesh disc 111. This achieves a closed-loop process of crushing, screening, and re-crushing of materials within the equipment. Coarse particles are intercepted by the upper mesh 115 and continue to undergo primary crushing. The material passing through the upper mesh 115 is then further refined through secondary crushing, ultimately outputting only materials that meet the target particle size. There is no need for manual collection of substandard materials for secondary feeding, completely eliminating multiple cyclic steps, simplifying the production process, and avoiding the multiple feeding, start-up, and manual sorting operations required by existing equipment. The entire process from material input to output is automated, reducing manual intervention and lowering labor costs. At the same time, eliminating the cycle time for secondary crushing significantly increases the material throughput per unit time, improving the equipment's effectiveness and meeting actual usage needs.

[0017] It should be noted that all electrical equipment involved in this product is powered by an external power source. The solution also includes an electrical control cabinet, which is installed on the equipment. During use, each piece of electrical equipment can be started and operated separately through the electrical control cabinet. The power connection method of each piece of electrical equipment is an existing mature technology and is well known to those in the field, so it will not be described in detail here.

[0018] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-stage mesh mill for fine material, characterized by: Including the base (101); The motor (102) is fixedly mounted on the base (101); The crushing shell (103) is fixed at one end of the motor (102) shell, and the output end of the motor (102) extends into the crushing shell (103). The crushing shell (103) is provided with a bottom mesh plate (111), a lower blade (113), an upper mesh (115) and an upper blade (117) from bottom to top. The discharge port (104) is located at the bottom side of the crushing shell (103); A cutter shaft holder (121) is provided at the output end of the motor (102); A feed plate (120) is located at the top of the cutter shaft seat (121); A mold frame cover (123) is provided inside the crushing shell (103), and a hopper (107) is inserted into the top of the mold frame cover (123). The housing cover (105) is located at the opening of the crushing housing (103) and is fitted onto the top of the mold frame cover (123) through a circular hole.

2. The multi-stage mesh mill device for fine material according to claim 1, characterized in that: The inner wall of the crushing housing (103) is provided with a number of equidistant stepped blocks (110). The output end of the motor (102) is fixedly installed with a spindle seat (108). A locking pin head (109) is fixed on the upper surface of the spindle seat (108). The cutter shaft seat (121) is provided with a positioning hole (122) that matches the locking pin head (109). The center hole of the cutter shaft seat (121) is sleeved on the spindle seat (108), and the locking pin head (109) is inserted into the positioning hole (122) to realize the limiting and locking of the cutter shaft seat (121) and the spindle seat (108).

3. The multi-stage mesh mill device for fine material according to claim 2, characterized in that: The bottom mesh tray (111) is placed on the bottom steps of multiple sets of stepped blocks (110) and simultaneously fitted onto the cutter shaft seat (121). A stepped ring (112) is fixed to the inner wall of the bottom mesh tray (111). The lower blade (113) is engaged with the hexagonal portion of the cutter shaft seat (121). A first spacer (114) is provided on the lower blade (113), and the first spacer (114) is engaged with the hexagonal portion of the cutter shaft seat (121). The upper... The layer mesh (115) is placed on the stepped ring (112) fixed by the bottom mesh plate (111) and sleeved on the cutter shaft seat (121). The upper layer blade (117) is sleeved on the hexagonal part of the cutter shaft seat (121). A second partition (118) is provided above the upper layer blade (117). The second partition (118) is stuck in the hexagonal part of the cutter shaft seat (121). The threaded part of the cutter shaft seat (121) is threaded with a nut (119).

4. The multi-stage screen crushing equipment for fine materials according to claim 3, characterized in that: The feed plate (120) has a circular hole at its center, and a bolt rod is provided in the circular hole. The bolt rod is screwed into the threaded groove of the main shaft seat (108).

5. The multi-stage screen crushing equipment for fine materials according to claim 3, characterized in that: The outer surface of the upper mesh (115) is fixedly equipped with a protrusion (116), and the inner sidewall of the bottom mesh plate (111) is provided with a limiting groove that matches the protrusion (116).

6. The multi-stage screen crushing equipment for fine materials according to claim 1, characterized in that: Limiting plates are fixedly installed on the outer surface of the bottom mesh plate (111).

7. The multi-stage screen crushing equipment for fine materials according to claim 1, characterized in that: A symmetrically arranged buckle (106) is installed between the crushing shell (103) and the shell cover (105).

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